Preparation method of bacterial-cellulose-based composite for flocculating decolorization of printing-dyeing wastewater

A technology for bacterial cellulose, printing and dyeing wastewater, applied in microorganism-based methods, biochemical equipment and methods, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of non-biodegradability and high production costs, and achieve efficient flocculation and decolorization , good flocculation decolorization effect, important application value and social benefit effect

Inactive Publication Date: 2017-09-15
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of non-biodegradable and high production cost existing in the current flocculants, a bacterial cellulose-based composite material with simple operation method, low production cost, green environmental protection and biodegradable is prepared, which is applied to the flocculation and decolorization of printing and dyeing wastewater

Method used

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  • Preparation method of bacterial-cellulose-based composite for flocculating decolorization of printing-dyeing wastewater
  • Preparation method of bacterial-cellulose-based composite for flocculating decolorization of printing-dyeing wastewater

Examples

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Effect test

Embodiment 1

[0019] 1) Under sterile conditions, use an inoculation loop to insert Gluconobacter (ATCC 49306) into 100mL liquid fermentation medium (35g / L glucose, 30g / L fructose, 3.0g / L yeast powder, 5.5g / L tryptone , 1.2g / L sodium citrate, pH 5, sterilized by high-temperature and high-pressure steam at 110°C for 30min), placed in a constant temperature shaker for shaking culture, culture temperature 29°C, rotation speed 80r / min, culture time 6d, a large number of flocculent Dispersed unpurified bacterial cellulose;

[0020] 2) Use 2 layers of gauze to filter out the culture medium from a large amount of flocculent dispersed unpurified bacterial cellulose obtained in step 1), soak it in a NaOH solution with a temperature of 70°C and a concentration of 0.1mol / L, and wash off the surface For the remaining bacterial protein and the medium components inside the cellulose, replace the NaOH solution every 20 minutes, and filter the purified bacterial cellulose after 3 cycles, then place it in 0...

Embodiment 2

[0023] 1) Under sterile conditions, use an inoculation loop to insert Gluconobacter (CGMCC 1671) into 100mL liquid fermentation medium (40g / L glucose, 35g / L fructose, 2.5g / L yeast powder, 5.0g / L tryptone , 0.8g / L sodium citrate, pH 4, sterilized by high-temperature and high-pressure steam at 110°C for 30min), placed in a constant temperature shaker for shaking culture, culture temperature 32°C, rotation speed 50r / min, culture time 9d, a large amount of flocculent Dispersed unpurified bacterial cellulose;

[0024] 2) Use 2 layers of gauze to filter out the culture medium from a large amount of flocculent dispersed unpurified bacterial cellulose obtained in step 1), soak it in a NaOH solution with a temperature of 90 ° C and a concentration of 0.1 mol / L, and wash off the residual cellulose on the surface. The bacterial protein and the medium components inside the cellulose were replaced with NaOH solution every 15 minutes, filtered to obtain the purified bacterial cellulose afte...

Embodiment 3

[0027] 1) Under sterile conditions, use an inoculation loop to insert Gluconobacter (ATCC 49306) into 100mL liquid fermentation medium (30g / L glucose, 40g / L fructose, 3.5g / L yeast powder, 4.5g / L tryptone , 1.0g / L sodium citrate, pH 6, sterilized by high temperature and high pressure steam at 110°C for 30min), placed in a constant temperature shaker for shaking culture, culture temperature 34°C, rotation speed 110r / min, culture time 8d, a large amount of flocculent Dispersed unpurified bacterial cellulose;

[0028]2) Use 2 layers of gauze to filter out the culture medium from a large amount of flocculent dispersed unpurified bacterial cellulose obtained in step 1), soak it in a NaOH solution with a temperature of 80°C and a concentration of 0.1mol / L, and wash off the residual cellulose on the surface. The bacterial protein and the medium components inside the cellulose were replaced with NaOH solution every 25 minutes, filtered to obtain the purified bacterial cellulose after 5...

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Abstract

The invention discloses a preparation method of bacterial-cellulose-based composite for flocculating decolorization of printing-dyeing wastewater. The method is characterized in that bacteria are dynamically fermented and cultured to obtain bacterial cellulose secreted in a medium, and a porous absorbing material is supported in the purified bacterial cellulose to obtain the bacterial-cellulose-based composite for flocculating decolorization of printing-dyeing wastewater. The preparation method is simple to perform and low in production cost; the composite prepared herein is effectively applicable to the flocculating decolorization of printing-dyeing wastewater and the like, and the composite itself is green and biodegradable and has important applicable value in the field of flocculating decolorization.

Description

technical field [0001] The invention relates to a preparation method of a flocculation decolorization composite material, in particular to a preparation method of a bacterial cellulose-based composite material for flocculation decolorization printing and dyeing wastewater, and belongs to the technical field of organic polymer material preparation. Background technique [0002] In recent years, water environmental pollution has always been a problem that restricts and plagues human development. Among them, printing and dyeing wastewater has become one of the most difficult industrial wastewater due to its large discharge volume, complex composition, large content of organic pollutants, and high chroma. Therefore, realizing the efficient treatment of printing and dyeing wastewater has become the top priority of water environmental pollution control. [0003] Flocculation decolorization technology has been playing an important role in the removal of particulate matter, dyes, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/04C02F1/28C02F1/56C12R1/01
CPCC12P19/04C02F1/286C02F1/56
Inventor 邵蓉蓉郑菲菲张勇姚菊明
Owner ZHEJIANG SCI-TECH UNIV
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